Overall installation type offshore photovoltaic supporting structure of steel truss platform and installation method

Abstract

The invention provides a steel net rack platform integral installation type offshore photovoltaic supporting structure, a net rack platform is arranged on a pile foundation structure, the net rack platform is provided with an upper plane frame and a lower plane frame in a layered manner, and the surface of the upper plane frame is connected with a photovoltaic module; the upper plane frame comprises upper chord members which are connected with each other, the lower plane frame comprises lower chord members which are connected with each other, the upper chord members are connected through ball joints, the lower chord members are connected through ball joints, and inclined rods are connected between the ball joints of the upper plane frame and the ball joints of the lower plane frame. Connecting sections are arranged at the end parts of the chord members, the lower chord members and the inclined rods; and connecting parts matched with the connecting sections are arranged in the spherical joints. The rod pieces in the net rack platform are connected through the ball joints and are in threaded connection together to form the net rack platform, the net rack platform does not need to be welded, the length of the bolts can be adjusted, and therefore the net rack platform is convenient and rapid to assemble.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore photovoltaic power generation, and in particular to an offshore photovoltaic support structure integrally installed on a steel grid platform and an installation method thereof. Background Art

[0002] Offshore photovoltaics is an emerging solar energy utilization direction and has developed rapidly in recent years. Traditional fixed offshore photovoltaic platforms generally have problems such as complex construction, long construction period, inconvenient transportation and installation, and high construction costs, which are specifically reflected in:

[0003] First, traditional offshore photovoltaic platforms use welded steel trusses, with steel pipes used as the main and diagonal materials. The steel pipes are directly welded to each other for fixation. As a result, the welding workload is large, the cycle is long, the turnover is slow within the construction site, and the site occupies a large area, resulting in slow platform construction and high costs.

[0004] Secondly, based on the above, it is difficult to connect steel pipes of different diameters, so the same chord can only use steel pipes of the same size. The forces on the same chord are very different at different locations, with the largest force at the span and almost zero tension near the support. Therefore, using steel pipes of the same specification will waste the steel used for the chord and increase construction costs.

[0005] Third, traditional offshore photovoltaic platforms generally use hot-dip galvanizing for corrosion protection. Single steel pipes are first hot-dip galvanized in the factory and then transported to the assembly site for welding into a whole. However, during welding, the galvanized layer is damaged. Although it can be remedied by zinc spraying, the anti-corrosion performance of zinc spraying is weaker than that of hot-dip galvanizing, thus forming a weak point of corrosion protection at the welding part.

[0006] Therefore, in order to better realize offshore photovoltaic power generation, how to ensure the structural stability, reliability, durability and convenience of the offshore photovoltaic platform structure is an urgent problem that needs to be solved in the platform structure. Summary of the invention

[0007] The first object of the present invention is to provide a photovoltaic support structure that does not require welding and has convenient and fast grid assembly. To this end, the present invention adopts the following technical solutions:

[0008] The steel grid platform integrally mounted offshore photovoltaic support structure has a grid platform arranged on a pile foundation structure, wherein the grid platform is layered with an upper plane frame and a lower plane frame, and photovoltaic components are connected and arranged on the surface of the upper plane frame; the upper plane frame includes upper chord rods connected to each other, and the lower plane frame includes lower chord rods connected to each other, and the upper chord rods and the lower chord rods are connected through ball nodes, and an oblique rod is connected and arranged between the ball nodes of the upper plane frame and the lower plane frame, and the ends of the chord rod, the lower chord rod and the oblique rod are all provided with connecting sections, and a connecting part cooperating with the connecting section is provided in the ball node, so that the grid platform can be quickly assembled and the surface of the rod is protected; a connecting structure is provided between the steel pipe piles of the pile foundation structure and the lower plane frame.

[0009] Furthermore: the bottom of the connection structure is plug-in-typely arranged on the top of the steel pipe pile, and the top of the connection structure is connected to the ball node.

[0010] Furthermore: a sealing plate is provided at the bottom of the connection structure, and the outer diameter of the sealing plate is larger than the outer diameter of the steel pipe pile; an insert tip is protrudingly provided at the bottom end of the sealing plate, and the insert tip can extend into the top of the steel pipe pile.

[0011] Furthermore: a fixing part is arranged on the top of the connection structure, and the top end of the fixing part is connected to a single ball node on the lower plane frame.

[0012] Furthermore: an internal thread is arranged on the connecting portion of the ball node, and an external thread is arranged on the connecting section of the chord rod, the lower chord rod and the diagonal rod.

[0013] The second object of the present invention is to provide a quick connection installation method. To this end, the present invention adopts the following technical solutions:

[0014] The installation method of the steel grid platform integrally mounted offshore photovoltaic support structure has the following specific steps:

[0015] S1: assembling the grid platform on land, adjusting and determining different specifications and sizes of rods at different target positions according to actual force magnitude during the assembly process, and installing photovoltaic modules on the upper plane frame of the grid platform;

[0016] S2: After the assembly is completed, the grid platform can be placed horizontally on a transport ship to be transported to the construction site;

[0017] S3: Install the connection structure on the lower plane frame of the grid platform and connect it to the ball node at the corresponding position. Insert the plug tip into the steel pipe pile by hoisting, and weld the cover plate to the steel pipe pile to complete the offshore installation of the grid platform.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention connects the rods in the grid platform through ball nodes, and then connects them together by threads to form a grid platform. The grid platform does not require welding, and the bolt length can be adjusted, so the grid platform is easy and fast to assemble. At the same time, each rod is made separately, and the specifications and sizes of the rod can be adjusted according to the actual force size. It is easy to use different specifications for rods in different parts such as spans and supports, and make full use of the force performance of each rod, so that the material utilization rate is high, the steel consumption is saved, the construction cost is saved, and the transportation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the front elevation of the overall structure of the present invention;

[0021] Figure 2 It is a side elevation schematic diagram of the overall structure of the present invention;

[0022] Figure 3 is a schematic diagram of the connection structure of the present invention;

[0023] Figure 4 It is a plan view of the grid platform of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the upper plane frame of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the lower plane frame of the present invention;

[0026] Figure 7 It is a structural schematic diagram of the oblique rod part of the present invention.

[0027] The markings in the accompanying drawings are: pile foundation structure 1, steel pipe pile 11, grid platform 2, upper chord 21, lower chord 22, diagonal rod 23, ball node 24, photovoltaic module 3, connection structure 4, plug tip 41, sealing plate 42, fixing part 43. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0029] like Figure 1-7As shown, a steel grid platform integrally mounted offshore photovoltaic support structure has a grid platform 2 arranged on a pile foundation structure 1, the grid platform 2 is layered with an upper plane frame and a lower plane frame, and a photovoltaic assembly 3 is connected and arranged on the surface of the upper plane frame; the upper plane frame includes upper chord rods 21 connected to each other, and the lower plane frame includes lower chord rods 22 connected to each other, the upper chord rods 21 and the lower chord rods 22 are all connected through ball nodes 24, and an oblique rod 23 is connected and arranged between the ball nodes 24 of the upper plane frame and the ball nodes 24 of the lower plane frame, and the ends of the chord rod 21, the lower chord rod 22 and the oblique rod 23 are all provided with connecting sections, and a connecting portion cooperating with the connecting section is provided in the ball node 24, so that the grid platform 2 is in a quick assembly state and the surface of the rod is protected; a connecting structure 4 is provided between the steel pipe piles 11 of the pile foundation structure 1 and the lower plane frame.

[0030] In this embodiment, the steel pipe piles 11 have a certain thickness, and there are four of them in total, forming a rectangular shape, which are used to transfer the load of the upper grid platform 2 to the foundation soil of the marine target operation area.

[0031] Specifically, the upper plane frame forms a square grid through a number of upper chord rods 21, and the lower plane frame also forms a square grid through a number of lower chord rods 22. The grid platform 2 of this embodiment is connected to the rods through ball nodes 24, wherein each rod is made separately, and the specification and size of the rod are adjusted according to the actual force, so that different specifications of rods in different parts such as spans and supports can be easily achieved, and the force performance of each rod is fully utilized, so that the material utilization rate is high, the steel consumption is saved, and the construction cost is also saved.

[0032] In this embodiment, the ball node 24 uses a bolt ball. Specifically, an internal thread is provided on the connection part of the ball node 24, and the number of connection parts on the circumferential surface of the same ball node 24 is set at three or more, so that each connection part is individually connected and matched with the connection section on the chord rod 21, the lower chord rod 22 and the diagonal rod 23; the connection section of the chord rod 21, the lower chord rod 22 and the diagonal rod 23 is provided with an external thread, so that the ball node 24 is connected to the chord rod 21, the lower chord rod 22 and the diagonal rod 23 through a threaded connection. Therefore, this embodiment does not need to use welding technology, and the length of the threaded part can be adjusted, thereby realizing the rapid assembly of the grid platform 2. Therefore, the grid assembly is convenient and fast, and the construction speed of the grid platform 2 is more than 3 times that of the welding platform; due to the fast assembly speed, the requirements for the assembly site are low, which can reduce the expenditure of construction costs.

[0033] Among them, the upper chord rod 21, the lower chord rod 22, the diagonal rod 23 and the ball node 24 are all protected by hot-dip galvanizing and coating. During assembly, the rods and the ball node 24 are connected by threads, which reduces the welding process and avoids the damage of welding to the hot-dip galvanizing and coating. Therefore, the overall anti-corrosion performance of the assembled grid platform 2 is reliable.

[0034] Among them, a connecting frame is set between the upper plane frame and the photovoltaic component 3. The connecting frame can not only provide a connection point for the photovoltaic component 3 on the upper plane frame, but also, due to the height of the connecting frame itself, the photovoltaic component 3 and the ball node 24 in the upper plane frame maintain a safe distance, and the two will not come into contact or collide, thereby affecting the installation effect.

[0035] like Figure 2-3 As shown, specifically, the bottom of the connection structure 4 is plug-in-typely arranged on the top of the steel pipe pile 11 , and the top of the connection structure 4 is connected to the ball node 24 , and is fixed to the lower plane frame of the grid platform 2 through the ball node 24 .

[0036] It should be noted that in traditional offshore photovoltaic platforms, the platform and the pile are welded to the pile body through a brace. This method has too many welded components, too much on-site welding workload, and too high requirements on the accuracy of the pile. The connection structure 4 can avoid the transportation disadvantages of traditional offshore photovoltaic platforms, which is reflected in the fact that each pile top of the traditional offshore photovoltaic platform will be supported by an inverted cone-shaped brace. Because the brace support structure has a large span and high height, the platform cannot be stacked when transported on a ship. The photovoltaic platform has the characteristics of large area and light weight, so that the traditional platform structure cannot be stacked, and often thousands of tons of ships are used to transport tens of tons of platforms, resulting in waste of transport ships and excessive transportation costs.

[0037] Among them, a sealing plate 42 is provided at the bottom of the connection structure 4. The outer diameter of the sealing plate 42 is slightly larger than the outer diameter of the steel pipe pile 11, which can allow a certain error in the top of the steel pipe pile 11, relax the requirements for the pile sinking accuracy of the steel pipe pile 11, and make pile sinking more convenient and quick; a plug tip 41 is protrudingly provided at the bottom end of the sealing plate 42. The sealing plate 42 is fixed around the plug tip 41, and the direction of the sealing plate 42 is consistent with the pile top, and is placed horizontally. The connection structure 4 fixed on the grid platform 2 is inserted into the top of the steel pipe pile 11 through the plug tip 41, which plays a guiding role and facilitates construction operations. On the above basis, the sealing plate 42 is connected to the top of the steel pipe pile 11 by welding, so that the grid platform 2 is stably installed on the steel pipe pile 11.

[0038] A fixing portion 43 is provided on the top of the connection structure 4 , the top end of the fixing portion 43 is connected to a single ball node 24 on the lower plane frame, and the connection position of the fixing portion 43 corresponds to the position of the steel pipe pile 11 .

[0039] See also Figure 1-7When installing the offshore photovoltaic support structure, the specific steps are as follows:

[0040] S1: Assemble the grid platform 2 on land. All the rods and ball nodes 24 are processed and anti-corrosion treated with hot-dip galvanizing coating in the onshore factory, and can be assembled on land. During the assembly process, the different specifications and sizes of the rods at different target positions are adjusted and determined according to the actual force magnitude, and the specifications and sizes of the rods are adjusted according to the actual force magnitude. At the same time, the photovoltaic modules 3 are installed on the upper plane frame of the grid platform 2;

[0041] S2: The assembled grid platform 2 can be placed horizontally on a transport ship to be transported to the construction site;

[0042] S3: The connecting structure 4 is installed on the lower plane frame of the grid platform 2 and connected to the ball node 24 at the corresponding position. The plug tip 41 is inserted into the steel pipe pile 11 by hoisting to play a guiding role during installation, and the top of the steel pipe pile 11 and the sealing plate 42 are welded around the pile top to complete the offshore installation of the grid platform 2.

[0043] The above embodiment is only a preferred technical solution of the present invention. Those skilled in the art should understand that the technical solutions or parameters in the embodiments can be modified or replaced without departing from the principle and essence of the present invention, and all should be covered within the protection scope of the present invention.

Claims

1. The steel grid platform integrally installed offshore photovoltaic support structure is characterized by: A grid platform (2) is arranged on the pile foundation structure (1), wherein the grid platform (2) is layered with an upper plane frame and a lower plane frame, and a photovoltaic assembly (3) is connected to the surface of the upper plane frame; the upper plane frame comprises upper chord rods (21) connected to each other, and the lower plane frame comprises lower chord rods (22) connected to each other, and the upper chord rods (21) and the lower chord rods (22) are connected to each other through ball nodes (24), and an oblique rod (23) is connected to the ball nodes (24) of the upper plane frame and the lower plane frame, and the ends of the chord rod (21), the lower chord rod (22) and the oblique rod (23) are all provided with connecting sections, and a connecting portion cooperating with the connecting section is provided in the ball node (24), so that the grid platform (2) is in a state of rapid assembly and the surface of the rod is protected; A connection structure (4) is provided between the steel pipe pile (11) of the pile foundation structure (1) and the lower plane frame.

2. The steel grid platform integrally mounted offshore photovoltaic support structure according to claim 1 is characterized in that: The bottom of the connection structure (4) is plug-in-typely arranged on the top of the steel pipe pile (11), and the top of the connection structure (4) is connected to the ball node (24).

3. The steel grid platform integrally mounted offshore photovoltaic support structure according to claim 1 is characterized in that: A sealing plate (42) is provided at the bottom of the connection structure (4), and the outer diameter of the sealing plate (42) is larger than the outer diameter of the steel pipe pile (11); an inserting tip (41) is protrudingly provided at the bottom end of the sealing plate (42), and the inserting tip (41) can extend into the interior of the top of the steel pipe pile (11).

4. The steel grid platform integrally mounted offshore photovoltaic support structure according to claim 1, characterized in that: A fixing portion (43) is provided at the top of the connection structure (4), and the top end of the fixing portion (43) is connected to a single ball node (24) on the lower plane frame.

5. The steel grid platform integrally mounted offshore photovoltaic support structure according to claim 1, characterized in that: The connecting portion of the ball node (24) is provided with an internal thread, and the connecting sections of the chord rod (21), the lower chord rod (22) and the diagonal rod (23) are provided with external threads.

6. The installation method of the steel grid platform integrally mounted offshore photovoltaic support structure is characterized by: The installation is carried out using the steel grid platform integrally mounted offshore photovoltaic support structure as described in claims 1-5, and the specific steps are as follows: S1: Assembling the grid platform (2) on land, adjusting and determining different specifications and sizes of rods at different target positions according to actual force magnitude during the assembly process, and installing photovoltaic modules (3) on the upper plane frame of the grid platform (2); S2: After the assembly is completed, the grid platform (2) can be placed horizontally on a transport ship to be transported to the construction site; S3: Install the connection structure (4) on the lower plane frame of the grid platform (2) and connect it to the ball node (24) at the corresponding position, and insert the plug tip (41) into the steel pipe pile (11) by hoisting, so as to complete the offshore installation of the grid platform (2).

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